How To Bend PVC & Make Incredible Shapes
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- čas přidán 24. 10. 2017
- I had to bend some pvc for an upcoming project and I had some trouble just using a heat gun, so I had to come up with another solution. So I heated some sand on a portable induction cook top and poured the heated sand into the taped pvc with a funnel. It worked great.
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As a contractor this is very very helpful in the field. Thank you for sharing!!
What a gem of a post, and the comments are equally helpful. I did this and it works flawlessly on 3/4"; larger sizes I had some issues with, but I'm thinking that was more my lack of experience. I did have one suggestion: Have you considered using just plain external caps in place of duct tape? I did and it was very easy, no gunk to clean off. Thanks for posting this, it's awesome.
I was going to suggest the same thing. The caps are not expensive.
Man the plumbing applications for this are endless....completely go around corners with one piece!!!...no 90's or 45's needed .
Soooooo glad I saw this.....wooow
Thanks
That's an interesting thought... I wonder if the bend would alter the integrity of the pipe enough to matter?
Very clever ! I use PVC tube at times to run electrical wire on custom truck and semi builds and have always slowly heated with a gun and was not very happy with sharp bends. Thank You for posting. Now I too have to figure out other projects to use this with LOL !
Absolutely simple and super technique. I am excited already the way I could use this tip!
I have been looking for videos explaining this method and yours is THE BEST!!!! Concise, straight to the point and easy to follow. And very well presented too! 11/10😊
In this video I explain how to do it with a very easy trick czcams.com/video/O7-5kqTzj50/video.html
Love this tip ❣❣❣ Reading comments, many have offered additional comments, however I think your method is perfect for someone who will only be needing to bend PVC on an irregular basis ... Less expensive than most with no additional tools ... You have come up with a great method for your needs !!! I love it ❣❣❣
Brilliant! I've never seen PVC, or any other piping bent in this way. Thank you for sharing this idea.
What a great idea! I will definitely use this trick! I've only used a heat gun for this type of bending. I usually quench the PVC once I get the shape I want.
With the same process even iron pipes were bent 40 years ago for the British bikes exhaust pipes, my dad used to tell me.
so helpful! I have been trying to make PVC pipe mini green houses for my plants this winter, I ended up just using multiple joints but now I know how to make what I want and had envisioned, Thank you!!
I'm planning on making a small project for my cat and this will be SO useful. I hated the idea of blocky elbow joints but with this I can get the smooth curves I want. Thank you!
Oh man I didn't know you could do this. This is going to make my next project much easier! Thank you!
Thanks for the tip Linn!👍
Exactly what I was thinking about doing in order to make irrigation rings with half inch diameter pvc, and you have shown me it works, thanks!
Great video! I needed to find a way to bend some pipe for a plumbing project, and this worked perfectly. Thanks for your help!
Thank You. This was something I never knew that could be done. 😊
Thanks lady, that's a good idea, you're a smart person.👍
What a great PVC hack! Bending the smaller pipes looks like a heap of fun!
Great idea. I've never seen those kinds of bends in pvc before!
I like this, especially making an artistic lamp base from PVC. With care you could possibly extend the circular base upward in one piece to create an interesting floor lamp with three or four drooping bulb receptacles. Thanks for keeping the music low enough to not intrude on your explanation.
Good one! I have also used hot/warm sand inside copper and stainless tubing, along with a heat gun or torch, to make shallow bends without caving or crimping it (handy if you have to put in a fuel or brake line in an older car or for running copper line to a refrigerator ice maker or to a sink, etc.). Also, and I've not personally used it, I have seen examples of using bendable wire springs as an outside diameter "form" for bending smaller diameter pipes, tubing or stiff plastic tubing.
What great info on bending the pvc. I wish I had known this when I rebuilt my house. It would have saved me a fortune!! Thanks.
Thank you for posting! Thanks to the commenters too! Very helpful for my project.
For your larger tubes, use drain pipe rather than the schedule 40. The thinner walls will heat and bend easier.
I always use external fire for bending pvc popes, but it is not perfect bend. This is new idea. Thank you very much
Thank you so much for sharing. Gives me many more ideas in my crafting adventures!
For the love of all things covered in gravy. This is awesome.
If you fill the pipe to the brim with sand (cold) you will have no problem using the heat gun! Buckling occurs because you are compressing a side of the tube and stretching the other side, the sand allows you to do that safely! :)
I did try that but the heat gun does not provide enough even heat, or enough heat to do the job, especially on the thicker pipe.
I would try hot sand on the inside and heat gun on the outside of the thicker pipe. I'm betting the combination will help a lot with getting more bending. You are running into the same problem with each on their own on the thick stuff. It doesn't heat sufficiently enough through the entire thickness, so if you go at it from both the inside and outside it should fix the problem.
Darbin Orvar Hot water will work as a much better heat transfer than the heat gun. 😊
Cool idea, but what about using an infrared heat gun, like the *Speedheater* (czcams.com/video/gZHdZeE-Nb0/video.html). Def smtgh I'll try out on 4-6" PVC pipe when I mount ducts for my new dust collecting system.
That would only be useful on short pipes, and you might also met the duct tape if you're not careful. Sand all over your oven :)
Never too old to learn, this is simple but brilliant 😊
Btw I'm in my 60's
GOD Bless You
Thanks Linn, what a super great idea!! I will try that in some personal projects! ThanKS FOR SHARiNG!
Thanks so much! Knowing how to do this now, I can imagine a lot of potential uses.
Very nice very informative thank you very much good job take care and God bless
With the thin pipes i found that if you evenly heat them for long enough ( heat it till you think its enough , then add an extra 2 minutes ) you can actually mold them around objects without getting kinks. I recently used this technique to make basketball hoops for a project ! Just flattened it on either side and put some holes in to get a hoop. Awesome video though
Thank you Darbin for sharing your creativity. I'm your fan!
Very cool; thank you. This hack will come in very handy for many projects I do.
Very good idea!!! It's fantastic.
The sand should be a fine silver sand preheated to remove any moisture, then filled, tamped down and refill and repeat until it will not receive any more, then the heat gun is used to saturate the bend radius area and then bent. Quenching the pipe with cold water rags to set the bend. { Safety Note " damp sand can result in steam within the pipe"}
Regards Ian.
First off , thanks for sharing...Your advise comes in handy as well as the comments that you've shared as well .
Fantastic, craft/maker hack.
Thank you for sharing this tip.
Good luck with your PVC Pipe projects.
You can put suitable size round spring inside the tube to keep it round when you are blending it
Chan Pong ,
What kind of blender do you recommend? It won't fit in my Blendtec or my Vitamix and my KitchenAid. Do you have some other type of blender we could use that I am not aware of? 😉😆
Great tip! It really brings a lot of ideas to mind, so cool.
I know, isn't it cool!
Nice one Linn! I'll definitely try it out on a future project.
What a great idea! Thanks Darbin for sharing it.
Merci pour le partage de cette technique particulièrement astucieuse. Sincères félicitations.
Buena idea. Ahora puedo moldear un tubo plástico para limpiar mi secadora de ropa.
This is actually extremely valuable- forget having to buy fittings for $2 a piece
Well done- thanks
Awesome, never had the idea of twisting pipes without L or U-sockets. Thank you for sharing.
happy to see this kind of video, I am also working in a project I have to bend a lampshade stand using PVC, many time I tried to bend PVC, but I was not a success, finally, I found your video, thank you very much.
That's pretty slick, nice hack! 🤓👍
I think the kink comes from lack of internal pressure inside the empty pipe. Filling it with sand gives something for the inside of the pipe to push against so it doesn't kink. Hot sand is a great idea though. Preserves internal structure and provides the heat for bending. I don't think heating PVC gives off toxic fumes. My understanding is that happens if you burn it. :)
This is the correct answer!
You use sand when bending steel pipe as well. Only then the application of heat comes from the outside in the form of a torch.
I know this comment comes in a bit late, but I just got a heat gun, and came across this video, so maybe this will help more people
Thanks. So nice of you to share. A useful tips indeed!
This is so cool I've use a stovetop element to get the heat I needed but this works out so much better because the sand protects that shape.
Hi Lynn we still use a "Spring Bender" where I live.. never seen it done or how they heat the PVC. But u put the spring inside the pipe heat then bend.. as far as I know..
+Sylvia Lategan Just like these; www.google.nl/search?q=buigveer+voor+pvc&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwi_y8CIqo7XAhXIblAKHZChAN4QsAQI1gE&biw=1920&bih=971
Bending without heat; czcams.com/video/yuQiInqGcf4/video.html
Malcolm Whinfield that's cool Malcolm.. thanks for the link's.
I'm gonna use this for a cosplay!
Thanks for the posting. Found it worked very well for my project.
Love this video. Effective, quick method is shown clearly without unnecessary blah blah. THANK YOU.
As a plumber I will use this to custom bend pvc
I could maybe use this idea for bending pipes for dust collection. I am intending to put a shop vac inside a cabinet I am building around the table saw. This might allow me to connect the shop vac to the table saw without using one of those ridged shop vac hoses (which add air resistance and reduce suction).
Nice, however you want sweeping curves, not sharp curves, for better airflow
I like the way you think outside the box. Great discovery! Also great video and great delivery!! :)
Thanks for the creative way of bending pvc without having to use a heat gun!
Use the caps that are made for the ends, instead of the tape. They are cheap and reusable. Also, heat the sand on a flat pan in the oven @400F it will heat faster and more evenly.
I did this. Heated on flat pan @405 for half an hour. Couldn't get any bend out of a 1/2 inch thick by 22 in long pvc pipe 😫
What am I doing wrong!!!!?
ومواصير cpvc كيف تسخن
I can attest, this really works! I tried it, and it worked great! Fantastic. I have some additional tips. Make sure and use very fine sand so it easily goes into the funnel and does not get stuck up. The sand had better be real sand made of tiny rocks. Some kinds of sands might not work i suspect. When heating the sand, how do you know when its hot enough? Simple, drop a drop of water into the sand. If it sinks into the sand, not hot enough. If it explodes off the surface, you are good to go. Hey, don't hold the pipe in your hand while pouring in the sand like Darbin did (even if she was wearing gloves), thats dangerous stuff! Set up a jig to hold the pipe so the hot sand gets nowhere near your body. Also, as you pour the sand into the funnel its good to have a stick or something to tap the pot with so the sand pours easily into the funnel. I bought a cheap aluminum pot just for the purpose and shaped it so it had a spout. That helps.
This video is so awesome! Thank you for sharing.
Thanks so much I have an unusual plumbing situation and I couldnt find the correct coupling to adjust the angle this will work I believe... again thanks fr posting this info
Great video Linn. Have you tried to use thin walled pipe? The thin stuff is easier to heat and bend. The guys over on Specific Love channel has a great video on how to bend pvc. They have a way to heat it up from the inside out. Check out there channel for different ways to use pvc.
Thanks for sharing
I fill the pvc with water and use a heat gun slowly and I don’t get buckles
So glad I found your channel. It gives me an idea to create something like this.❤
Really a very amazing device to bend a pvc pipe. Thanks for sharing this information Ma'am. With love a lot thanks again.
I used this system to build the Audry II puppets for the broadway musical "little Shop of Horrors"
Well that is just awesome.
"I used regular sand
that I had on hand
Heated up in a pot
till it was pretty hot."
A poet who doesn't know it...
But.. her feet show it. They're Longfellows.
The most beautiful thing I've seen all day.
Mc Atheist...There is a God in Heaven and He Loves you. BUT...There is also a Hell with a lake of Fire that you will go to and experience burning torture for Eternity if you DONT REPENT and Serve Jesus Christ !!! ***YOU'VE BEEN WARNED***
Soldier Of The Cross
Logic and reasoning doesn’t work for you, so you go straight to FEAR!
You are as low as a worm but with less grip on reality.
@@parajacks4
Our lifetimes are nanoseconds compared to our eternities.
A million Earths can fit inside our Sun.
With abundant creation, it is logical and reasonable to conclude God the Creator exists and the physical realm is to prepare us for the nonphysical eternal realm with or without God.
Hot Sand PVC Bending Thank You you fixed my hot tub 2" drain alignment problems! I was going to cut PVC fittings and re glue weld but that would have caused possible cracks and leaks. Hot Sand PVC Bending is a super fix.
Great trick :-) I've used sand to bend 10mm copper pipe, but never thought of hot sand for PVC. Thanks for posting this :-)
I would think hot sand (internal heat) AND the heat gun (external heat) would work on the larger pipe.
Sebastopolmark my thoughts exactly.
Someone called "Technicolor Christmas" said that even 2" pipe can be bent with this method.
Water should work better and easier due to higher heat transfer ratio (fluids transfer heat much faster). Once you get over glass transition temperature (~70°C for PVC), the macromolecules of the polymer brake bonds among them so there is no compression effort on the inside part of the curvature. Since there is no compression no buckling will happen.
Yes, heat transfer would be higher with water , but the sand has other properties, like a lower rate of cooling. That helps to give time to perform the bending.
Excellent technique,easy n availablity of materials, thanks for sharing.
Thanks for the video. This could really come in handy. I'm adopting a dog with spinal issues and was going to build a wheelchair for him using pvc pipe (lots of videos on CZcams) but there are one or two places that I thought putting a slight curve in the pipe would make it more comfortable.
Would boiling water do the same??
🤷🏽♂️
So it was like -6 degrees out and snowing so i thought id use the sand in the cat tray........
..........do not heat up the sand from the cat tray......
EVER.
Dumbass😂😂😂😂
Wow! Excellent idea. Thank you for sharing.
This is just what I needed... To know for my projects... Thanks for sharing...
An idea
Shape it like a spring
Make some holes on it attached a pond water pump at the bottom of the pipe
And you have a cascadijg water fall of some sort😁
Ok maybe more like a raind drops?
But the sound of the water landing on the pond would sound so cool
Why don't you use a bending spring this is what I've used in my job as a electrician.
Thanks. We hand the ball to the guy who got us here.
Great technique! For thicker pipes maybe use two batches of hot sand. Let first batch preheat the pipe a little, pour out warm sand, then fill with the second batch of hot sand. With several rounds of your truck, you could probably bend the really big pipes (4" or 6"). Thanks for sharing!
This is really clever! I'm definitely going to have to try this very very soon.
No more elbow production with this trick
dunk in cold water when desired shape is achieved, rather than hold the shape forever waiting :)
Won't it crack?
Cooling too fast can cause the shape to change
Thank you for those tips, the explanation was very clear, it will be very useful to me
Great tip. I have absolutely no need to bend pvc pipe right now, but I’m going to try it anyway. Nicely shot vid also!
Use care when heating pvc, it can off gas some nasty fumes. Toxic.
PVC Heating Blanket if your going to be doing a lot of these projects.
your all blog and video are so useful and it's great keep posting videos.
Cool video.
I've been doing something similar. I've been filling it with room temp sand and then heating it in the oven for about 5 mins on about 300 degrees.
It works well, but I think this method is better so thanks :)
Maybe do this in a well vented place? Heating PVC, I've read, can release toxic and carcinogenic vapors
yes overheating/burning PVC produces HCl vapours. Also all the stuff the manufacturer mixes in to get it softer or tougher can be quite bad if heated. I would even go so far as wearing a filter mask with low temperature organic vapour filtering filters.
Look up DIOXIN. Pvc should be illegal.
Sam G, No it's not just when it is burned. Heating PVC (anything above approx 60 deg C) will also release dioxins and chlorine vapours. Exposure to dioxins can cause reproductive and both cognitive / physical development problems. Chlorine vapours can cause all sorts of respiratory issues.
johnDon dumb like you should be illegal.
dsnake457 sch uneducated fool
Do you know the pvc pipe will lose its properties after heating with sand or any liquid ?
""If exposed to temperatures any higher for a prolonged period of time, the thermoplastic material begins to lose its rigidity and pressure handling abilities. Like any thermoplastic, PVC becomes more pliable when heated. When enough heat is applied strategically it is possible to bend rigid PVC pipe."
Awesome! That's what I was looking for! You save my project! God bless you!
Thank you so much for sharing this. Total game changer.
Hate to be the safety police, but hot PVC can release harmful fumes. Probably best to do this with plenty of ventilation.
John Pattillo wouldnt it only release toxic gas if its on 🔥 fire?
Wow! I saw your instructable on this! Super clever and helpful! Wish I saw this when I was making my costumes!
Just learned some thing new today, thank you for the information.
I've done this many times, starting with cold regular unheated sand. I just used a heat gun to heat the PVC, carefully and slowly. The kinking is due to there being nothing inside the pipe to prevent it's collapse and kinking during bending. Sand inside keeps this from happening. This is exactly how the makers of musical instruments, like brass horns bend the brass, except with more heat. Fill the pipe with sand that will easily be cleaned out. I've made Aquarium piping for things like auto-siphons that keep a constant water level. That's basically 2 "U's connected by an inverted "U".